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A. How much work is done by a 500 N force that pushes a 1200 kg car 50 m if the car is moving 20 m/s when the force is applied? (The force is applied in the direction of motion.)
B. A bullet penetrates 30 cm below the surface of water. If 2940 J of work is used to stop the bullet, then what is the stopping force. Ignore the effects of gravity?
C. In order to insert a nerf dart into a toy gun, 50 J of energy needed to be exerted. It the dart was inserted 6 cm, then how much force was required to install the nerf dart?
D. A St. Bernard dog pulls a 20 kg sled 50 meters with a 300 N force. the force act parallel to the ground. How much work does the dog do?
A sphere of radius R is uniformly charged to a total charge of Q. It is made to spin about an axis that passes through its center with an angular speed ω. Find the magnitude of the resulting magnetic field at the center of the sphere.
A resistor is in the shape of a cube, with each side of resistance R . Find the equivalent resistance between any two of its adjacent corners.
Question: Field and force with three charges? What is the electric field at the location of Q1, due to Q 2 ?
What is the maximum displacement of the bridge deck?
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Questions on blackbody, Infra-Red Detectors & Optic Lens and Digital Image.
Illustrate the cause of the components accelerating from rest down the conveyor.
Calculate the dc voltage applied to the circuit.
Quadrupole moments in the shell model
Determine the tension in each string
Calculate the smallest coefficient of static friction necessary for mass A to remain stationary.
Evaluate maximum altitude?
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